In 1992 (over 20 years ago), I had super tasting coffee in Copenhagen (hotel breakfast, railway station, etc.)--I went back 3 years later, and the "greatness" was gone.
With rare exceptions (over the past 20 years), have I ever gotten "great" coffee. At home I use bottled water, and have tried many recommended brands (some based on the coffee Consumer Reports rated highly--in their tests several months ago)--just mediocre tasting coffee.
[PS: IMHO, Starbucks is overrated (the dark roasts of the Pacific NW are not all that good).]